Транзитные наблюдения экзопланет позволяют измерять такие величины, как температура и относительное содержание различных элементов в их атмосферах. Для измерения параметров атмосфер экзопланет методом транзитного поглощения широко применяется инфракрасная линия метастабильного гелия HeI 10830 Å. Спектры излучения (спектральная плотность мощности) звезд существенно влияют на физико-химические параметры верхних слоев атмосфер. Для звезд различных спектральных классов методом численного моделирования исследуются особенности транзитных поглощений в линии HeI 10830 Å. Результаты демонстрируют ключевую роль спектра звезды в формировании верхней атмосферы и амплитуде транзитных поглощений экзопланет в линии HeI 10830 Å.
оптика атмосфер, трансмиссионная спектроскопия, экзопланеты, численное моделирование, метастабильный гелий
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